After installing Processing 2.0.2 on my Mac (10.8.4), some OpenGL sketches no longer look the same and appear very slow.
This sketch (requires toxiclibs) demonstrates the problem. The screenshots below show what it looks like in Processing 2.0.1 (1st) and 2.0.2 (2nd).
Not using "smooth(4)" makes the sketch in 2.0.2 look closer to what it looked like in 2.0.1, but it's still very slow.

